Well this is a hard question, because as you see the market is vulnerable and the values constantly change. A god clue can be the past history of coins.Things like periodical decreases, time of "recovery" the volume of their affairs...

According to me, a good coin to invest in can be FuturoCoin. They started circulating very recently, but they had an impressing increasing in the past few months and they were soon launched on many famous platforms, even CoinBe started selling them, since you're interested in that platform